64965636 has 144 divisors (see below), whose sum is σ = 189221760. Its totient is φ = 18662400.

The previous prime is 64965631. The next prime is 64965643. The reversal of 64965636 is 63656946.

64965636 is a `hidden beast` number, since 6 + 4 + 9 + 6 + 5 + 636 = 666.

64965636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 64965591 and 64965600.

It is not an unprimeable number, because it can be changed into a prime (64965631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 430161 + ... + 430311.

It is an arithmetic number, because the mean of its divisors is an integer number (1314040).

Almost surely, 2^64965636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64965636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94610880).

64965636 is an abundant number, since it is smaller than the sum of its proper divisors (124256124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64965636 is a wasteful number, since it uses less digits than its factorization.

64965636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 229 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The square root of 64965636 is about 8060.1263017399. The cubic root of 64965636 is about 402.0017078713.

The spelling of 64965636 in words is "sixty-four million, nine hundred sixty-five thousand, six hundred thirty-six".